Roll grinder



g- 9, 1932- R. c. LEWIS ET AL 1,371,002

ROLL GRINDER Filed Sept. 25, 1928 4 Sheets-Sheet l Adg. 9, 1932. R. c.LEWIS ET AL ROLL GRINDER Filed Sept. 25, 1928' 4 Sheets-Sheet 2 ROLLGRINDER 4 Sheets-Sheet 3 Filed Sept. 25, 1928 Aug. 9, 1932.. R. c. LEWISET AL 1,871,002

ROLL GRINDER Filed Sept. 25. 1928 4 Sheets-Sheet 4 Patented Aug. 9, 1932RICHARD o. LEWIS, or A soNrA; AND cent 1?.

SCHNUCK, on NEW HAVEN, ooNN ncra ICUT, ASSIGNORS TO BARREL-BIRMINGHAMCOMPANY, Inc, or ANSONIA, ooNNEorI- Icur norm GRINDER Application filed.September 25, 1928. Sea 6. 308,254.

positions relatively to the work.

Relatively long rolls require considerable time to grind and being ofconsiderable weight, are cumbersome and diflicult to set up in thegrinding machine. It is desirable to completely grind these rollsWherever such work is required on the machine where the roll isoriginally setup so that all the surfaces ground will'be vconcentric'orotherwise properly related to each other. A machine capable ofperforming all of the grinding operations required upon a roll, withoutreadjusting or resetting theroll, greatly increases the-accuracy of thefinished product and reduces the cost of the same by a considerablesaving in labor and time. 7

This invention contemplates the provision of a grinding machine whereina roll may be accurately ground on its periphery and have its endsground at an angle to its peripheral surface, beveled or rounded asdesired, without readjusting or resetting the work relatively to thegrinding wheel.

One of the ob 'ects of this invention is to provide an improved rollgrinding machine.

Another object ofthis invention is to provide in a grinding machine animproved grinding wheel supporting structure.

Another object of this invention is to provide a swivel grinding wheelsupport.

Still another'object of this invention is to provide a grinding wheelsupport which will be provided with means to feed the grinding wheelaxially along, toward and away from, and be swingable relatively to, athe work mounted in the work support.

' A further object of this invention is to provide novel and improvedmeans for feeding and swiveling the grinding wheel of a roll grindingmachine relatively to the Work mounted therein, and which will operateeffi ciently and without afi'ectingthe rigidity and relative positionrequired between the wheel and the work. I

To these and other ends, our invention consists in the novel featuresand combinations of parts to be hereinafter described and claimed.

In the accompanying drawings:

Fig. 1 is a plan view of a machine embodying the features of thisinvention;

Fig. 2 is a front elevation'of the machine;

Fig. 3 is a section on line 3-3 of Fig. 1; 1

Fig. 4: is a top plan view of the grinding wheel. supporting structure;I

Fig. 5 is a section on line 55 of Fig. 1; Fig. 5 is a partial sectiononline 5 5 of Fig.5;

Fig. 6 is a top plan view of the grinding wheel supporting structuremoved into a different position than that shown in Fig. 1,

and in which certain parts have been omitted for the sake of'clearness;

Fig. 7 is a top plan view of a grinding wheel supporting structure ofsomewhat modified form; t

Fig. ,8 is a front elevation of the same, and Fig. 9 isa section on line99 of Fig. 7 The grinding machine selected to illustrate the features ofthisinvention, generally comprises a frame 10 upon which is mountedsuitable work supports comprising a power driven head stock 11 and anadjustable tail stock 12. A tool carriage 13 is'provided and mountedupon suitable 'guideways 14 and 15, secured or formed upon the frame 10.The carriage 13 is adapted to be reciprocated upon the guideways 14 and15 in an axial direction relatively to the workmounted between the worksupports. Suitable power operated means 16 is provided and mounted uponthe carriage 13 to reciprocate it. The reciprocating means comprises amotorl'T, a train of gears 18, including reversing mechanism, and adriven pinion 19, which cooperates witha stationary rack20, secured tothe frame 10.

A grinding wheel supporting structure is also provided'and mounted uponthe carriage 13. In this instance, two grinding wheels 21 and 22 areprovided and mounted upon. the

16 generally cooperate with clutch member ally mounted on the subbase129and there;

fore the grinding wheels are swingable relatively to the work, and theaxis thereof may be disposed at any angle to the axis of the work whichis desired. Mechanism for swiveling the base i 28 is provided andmounted thereon. The base 28 is pivoted to the sub-base 29 at .30 by thecooperation between a stud 31 on the sub-base 29witha roller bearing 32,secured within an openingv in the base 28. A plurality of annularengaging surfaces 33 and 34 are respectively formed upon the base 28 andsub-base 29 to support the base upon theupper surface of the sub-base29.

An annular rack 35, concentric to the pivot point 30 is provided and issecured upon the periphery of the sub-base 29. In meshwith the teeth ofthe rack 35 is a pinion 36 mounted upon the end of a vertical shaft 37,which is journaled in a bearing 38, secured to the base 28. A worm wheel39 is secured to the upper end of shaft 37, the teeth of which are inmesh with a worm 40, secured upon a horizontal shaft 41. I

' The shaft 41 passes into a clutch or gear box 42, being journaled'inthe bearing 43 V therein, and is keyed to a clutch member 44. One end ofa clutch sleeve is adapted to 44 to engage the same. The clutch sleeve45 is rotatably mounted partly upon an end extension 46 of the shaft 41and partly upon the end extension 47 of a shaft 48, which is inalignment with shaft 41, and also passes into and is journaled in thebox 42 in a bearing 49. A

bevel gear 50 is keyed to the clutch sleeve 45,

i the sleeve being adapted to slide axially rel- 7 motor shaft52 topermit atively to this gear and upon the shaft end .extensions 46 and47, so as to permit an operative connection between the same and theclutch member 44, to drivingly connect the gear 50 thereto. A bevelpinion 51 is in driving engagement with the gear 50. The pinion 51 ismounted upon a shaft 52, which is an extension of the shaft .of anelectric motor 53. The motor 53 ismounted upon the wheel base 28. Ahandwheel 54 is secured upon the manual rotation thereof when this isdesired.

The other end of the clutch sleeve 45 is adapted to engage a clutchmember 55'keyed upon the shaft 48. Both of the clutch members 44 and 55are suitably retained against axial movementby means of thrust bearings56 and 57 respectively,which are secured to The wheel base 28 isopposite sides of the gear box 42, which houses the aforesaid parts.'The clutch sleeve 7 45 may be reciprocated to operatively engage eitherclutch member 44 or 55, or to be disposed in a neutral position out ofengagement with either. A clutch lever 58, through the medium of avertical shaft 59 and links 60, which engage trunnions provided upon.slidably supported thereon by the cooperation between suitably formedguides 62 and guideways 63, respectively formed upon the sub base 29 andcarriage 13. In the arrange? ment shown, the sub-base 29 is slidableupon the carriage 13 in a direction transverse to the axis of the workand substantially at right angles to the direction of the reciprocatingmovement :of the carriage 13. j To obtain the aforesaid transversesliding movement of the sub-base 29, the following mechanism isprovided. A lead screw 64 is secured to the carriage 13 and retainedthereto against rotation. The screw 64 extends beneath the sub-base 29and isdisposed with its axis parallel with the guides 62 and guideways63. A sleeve nut65, journaled in a lug 66, secured .to and dependingfromthe subbase 29 is adapted to threadingly engage the screw 64. A bevelgear 67 is mounted-upon andsecured to the nut 65, with its teeth in meshwith a pinion 68. I Thepinio-n '68 is secured upon the lower end of thevertical shaft 69, which is journaled in the sub-base 29 and extendsupwardly through the stud 31, concentricwith the axis of the pivot point30, between the'base 28 and sub-base'29. A bevel gear 70-is secured tothe upper end of the shaft 69, and is in driving engagement with a bevelpinion 71, pinned to the shaft 48, which extends intoa gear box 72,being journaled in a thrust bearing'73therein. The gear box 72 housesthe gear 70'and pinion 71 as well as providing a bearing for a handwheelshaft 74, which extends into the box at an angle with the axis .of theshaft 48, and is connected thereto by means of auniversal'joint coupling75.

A- hand-wheel 76 is secured to the outer end of shaft 74, to permit themanual operation of the nut 65, pon'the screw 64, to slide the sub-base29 upon the carriage 13. 1' I By means of the reciprocable feeding 1movement provided for the carriage '13, it is obvious that the grinding"wheel may be moved axially with'respect to the work in eitherdirection. By means of the above described mechanism for transverselyfeeding the sub-base 29, the grinding wheels may be moved transverselywith respect/to the axis ofthe work, and by means of the above describedmechanism for swinging the wheel I base 28 with respect to the sub-base29, the grinding wheel may beswiveled relatively to the work into theposition shown in Fig;

, Preferably, power isapplied for coarse and fast adjustments and thehand-wheels used to manually obtain fine adjustments. 7

Fig. 6 illustrates one use for which the swivel arrangement for thegrinding wheel may be put. In this case,one of the grinding wheels isbeing used to grind the end surface of a roll It will be obvious that ifthe base 28 is only partially swung-about its pivot 30 relatively to thesub-base 29, a bevel of any desired angle can be'ground upon the end ofthe 'roll, and that in a ma-- chine ofthis type, by keeping the grindingwheel in contact'with the peripheral surface of the roll up to its endand then swinging I the wheel base 28 upon its pivot, while backing upthe sub-base, a rounded corner might be formed. Preferably, however, aformed wheel would be used-when forming a rounded corner, the wheelbeing set at an angle and fed against the corner. It is also to be notedthat any and all of these operations may be performed withoutdisturbingthe original setting of the roll between the supportstherefor, and that, therefore, the time and labor consuming operationsof resetting the rollfor these different operations has been eliminatedand that accuracy in the location and form of the cutsmade will beassured.

' Figs. 7 8 and 9 illustrate a somewhat-modified form of mechanism forobtaining the same results. In this instance, a sub-base is providedwith internal'teeth formed upon a ring segment 81, secure'd thereto.. Agear 82 secure upon a shaft, is in driving engagement with the ringsegment 81, and is in turn driven by a cha n of gearing 83, incuding aworm wheel 84 and worm 85; V The worm 85 is secured to the shaft ofthemotor 86.

Operation of this mechanism will rotate the wheel base 87 upon a pivot88,'disposed between the same and the sub-base 80, A feed screw 89,journaled in the sub-base 80, and rotated by means of a-worm wheel 90and worm 91, which is secured upon the shaft of a motor 92, cooperateswith the threads 93 provided in the lug 94, secured upon the carriage 95to slide the sub-base 80 transversely thereof.

As in the previously described form, the sub base 95 is sl d-able uponframe 96 by suitable mechanism operating through a pinion 97, whichis'in driving engagement with the rack 98, secured to the frame 96.Grinding wheels 99 and 100 are mounted upon the wheel base 87, anddriven by means of motor. 101, by the use of a belt 102..

,While we have shown and described a preferredembodiment of ourinvention, it is understood that it is not to be limited to all ofthe'details shown, but is capable of modification and variation,whichwill lie within. the spirit of the invention and the scope of theappended claims.

What we claim is: 1. In a grinding machine, a frame, work supports,agrinding wheel adapted to oper ate upon work in said supports, means tocause said grinding wheel-to traverse the- .work axially thereof, means;to move said wheel toward and away fromthe work transversely of the axisthereof, and ,means to swing said grinding wheel into aposition whereinits axis is at an angle to the axis of the work, a sourceof power, andmeans to connect and disconnect either ofsaidtwo last na-med means tosaid source of power.

2. In a grinding machine, a frame, a carriage reciprocably mounted uponsaid frame,

means to reciprocate said carriage longitudinally of said frame, asub-base slidably mountedupon said carriage for movement in a directiontransverse to the direction of the movement of said carriage withrespect to said frame, and a grinding wheel base pivotally mounted uponsaid sub-base, and com mon power means to move said sub-base relativelyto said carriage, and to rotate said wheel base upon saidsub-base. 3. Ina grinding machine, a frame, a carriagereciprocably mounted upon saidframe,

means to reciprocate said carriage longitudinally of said frame, asub-base slidably Ili mounted upon said carriage for movement in adirection transverse to the direction of the movement of saidcarriagewith respect to said, frame, and a grinding wheel base pivotally mountedupon said su-b'base, and com- I, 4

mon power means mounted on said wheel base to move said sub-baserelatively to sa1dcar riage and to rotate said wheel base upon saidsub-base, and means to connect said power means to the respective partto be moved, and f.

to disconnect the other part therefrom.

'4, In -.a grinding machine, a reciprocable carriage, a sub-baseslidably mounted upon sald carriage, agrinding wheel base'pivotal- 1ymounted-upon said sub-base and common I means to move said sub-base andswing said wheel base upon its pivot.

5. In a grinding machine, a, reclprocable carriage, a grinding wheelbase mounted upon said carriage for sliding and pivotal, movementrelatively thereto, and common means to selectively slide and swing saidwheel base.

and to swing said wheel base uponits pivot, r

and additional means to move'said sub-base 6. In ajgrinding machine, areciprocable on said carriage when said common means is disconnectedtherefrom.

7. In a grinding machine, a reciprocable carriage, a grinding wheel basemounted upon said car 'iage for sliding and-pivotal movement relativelythereto, and means selectively operable to slidesaid wheel base or toswing the same. 7 1

8. In a grinding machine, a reciprocable carriage, a grinding wheelbasemounted upon said carriage for slldlng and pivotal move ment relativelythereto, and power operated means selectively operable to slide saidwheel base or to swing the same. V

9. In a grinding machine, a'reciprocable carriage, a grinding wheel basemounted upon said carriage for transverselysliding move 10. In a rollgrinding machine, means to V rotatably support and rotate a'roll, acarriage mounted to reciprocateaxially with respect to the roll, asub-base mounted upon said carriage to slide transversely relatively tothe axis of the roll, a grinding wheel support mounted to swing in ahorizontal plane, means to slide said sub-base, and means to swing saidwheel support, both of said means being mounted on said wheel support, acommon power drive for said last two mentioned means, and means toselectively connect said power drive with either of said'means.

11. In a roll grinding machine, means to rotatablysupport and rotate aroll, a carriage mountedto reciprocate axially with respect to the roll,a sub-base mounted uponsaid carriage to slide transversely relatively tothe axis of the roll, a grinding wheel support mounted to swing in ahorizontal plane, means to slide said sub-base and means toswing saidwheel support, both of said means being mounted on said wheel support,acommon power 'drive'for said last two ,mentioned means, and means toselectively connect said power drive with either of said means, andmanually operable means to slide said subbase, when said common powerdrive is disconnected therefrom.

12. In a roll grinding machine, means to rotatably support and rotate aroll, a carriage mounted to reciprocate axially with respect to theroll,a sub-base mounted upon said carriage to slide transversely relativelyto the axis of theroll, a grinding wheel support mounted on saidsub-base to swing in a horizontal plane, an electric motor mounted onsaid wheel support, and means to operably connect said electric motorwith said subbaseto slide the same, and operably connected withsaidwheel support to swing the same,

connect said electric motor with-said subbase to slide the same, and tooperably con-v nect saidmotorzwith said wheel support to swingthe same,said means operably disconnecting said motor from one when connecting ittothe otl1er, a'nd means to slide said subbaseindependently ofsaid'motor.

14. In a grinding machine, a .carriage, a sub-base slidably mounted onsaidcarriage, a grinding wheelbase pivotally mounted on said sub-base,means to swing said wheel base relatively to said sub-base disposedabove said subbase, and means to slide said subbase upon said carriagedisposed below said subbase, means disposed above said sub-base tooperate said swinging and sliding means, and means passing through saidsub-base to operably connect said operating means with said slidingmeans.

15. Ina grinclingmachine, a carriage, a sub-base slidably mounted onsaid carriage, a grinding wheel base pivotally mounted on said sub-base,means to swing said wheel base relatively to said sub-base disposedabove said sub-base,'and means'to slide said subbase upon said carriagedisposed below said sub-base, means disposed above said sub-base tooperate said swinging and sliding means, and; means ,passingthrough thepivot point between said sub-base and said wheel base to operablyconnect sai'd operating means with said sliding means. r

16.'In a grinding machine, a carriage, a sub-baseslidably mounted onsaid carriage, a grinding wheel pivotally mounted on said sub-base,means to-slide said sub-base including a shaft, means to swing saidgrinding wheel including a shaft, and rotatable means mounted partlyoneach shaft and shiftable axially thereof in one direction to drive oneshaft, and in the other direction to drive the other shaft.

17. In a grinding machine, a carriage, a grinding wheel mounted uponsaid carriage for sliding and swinging movements relativelythereto,means to slide and means to swing said grinding wheel, each of saidmeans including a shaft, and rotatable'means mounted partly on eachshaft and 'shiftable axially thereof in one direction to drive one shaftand in the'other direction to drive the other shaft. 7 Y i 18. In-agrinding machine, a carriage, asub-base slidably moimte'd onsaidcarriage, a

grinding wheel base pivotally mounted on said sub-base, means to swingsaid wheel base relatively to said sub-base including a shaft, and meansto slide said sub-base upon said carriage including a shaft, means tooperate said swinging and sliding means, and means passing through saidsub-base to operably connect said operating means with said slidingmeans, said operating means including rotatable means mounted partly oneach of said shafts and shiftable axially thereof in one direction todrive one shaft, and in the other direction to drive the other shaft.

In witness whereof, we have hereunto set our hands this 22nd day ofSeptember, 1928.

p RICHARD O. LEWIS.

CARL F. SCHNUCK.

